1948-49 Theatre Catalog, 7th Edition, Page 252 (241)

1948-49 Theatre Catalog, 7th Edition, Page 252

is now offering this service to regular
roofed theatres as an alternative to
fumigation; and early tests have proven
both satisfactory and economical.

Cochranls plans for the future involve
buying another fog machine to meet the
demands of his ever-increasing business;
and eventually acquiring a helicopter in
which he expects to install a TIFA for
large scale insect extermination and control. His possession of a pilotis license
and his thorough air training during the
war will stand him in good stead here.
In all his work, Cochran mixes his own
formulations; and avails himself of all
current technical literature to keep
abreast of a rapidly changing field.

The Fog-Maker

In the equipment field, one of the important recent developments is a lad
ically new applicator for insect extermination which is said to be the first
portable fog-making unit and also the
first machine capable of producing an
insecticide fog without the use of heat,
gas, steam, smoke or other extraneous
materials.

This machine is called the Hession
Microsol Fog-Maker after its inventor,
John W. Hession, Jr. Microsol, utilizmg
two electrically-powered rapidly whirling discs to produce a combination of
centrifugal force and simple pressure
draws the insecticide from the reservoir
It then breaks the chemical down into
microscopically nne (15 microns) particles light enough to be air-borne and
projects them in the form of swirling,
billowing aerosol which will ride air and
convection currents. The greatly enhanced effectiveness of an insecticide in
aerosol dispersion is now generally established.

Development of the Hession-Microsol
is said to have been successfully fulfilled
after four years of laboratory and field
experimentation, conducted in close cooperation with leading government authorities and scientists. Portable and
weighing but 11% pounds, one model is
equipped with a translucent nylon reser
1948-49 THEATRE CATALOG

ABOVE is a large Microsol spraying unit mounted on the versatile jeep. The large opening of the spraying unit, through which insecticidal tog is propelled. insures the coverage of large areas with a
minimum of time expended. The big cloud also insures ample spraying of all types of foliage.

voir of one quart capacity and is powered by a if; H.P., 110:120 volt A.C.-D.C.
Universal motor, air cooled and equipped
with sealed bearings which require no
maintenance. For drive-in theatre or
similar use, a medium size unit of the
same general design but gasolineemotor
driven is being developed. This model
will be mounted on a dolly and transported on a jeep to and around the workThe manufacturer claims a number of
advantages for the Microsol machine.
Particles are just the right size for a
lethal dose. This means that the bulk of the. micron-sized droplets in the aerosol
produced by this machine are concentrated in the narrow range of sizes
which years of research and field tests
have revealed to be the death-dealing

sizes for the insect enemies of mankind.
And the Microsol equipment is said to
be extremely rapid in getting its insecticide fog over the entire drive-in area.
Built primarily of aluminum and powered by a specially-designed, totally enclosed electric motor, many of these
units have been operated on eight-hour
continuous runs, daily over periods of
months, with no damage to the mechanism. The model avoids the use of fuel,
steam and propellant gases, uses insecticides alone. The great waste of materials previously emitted as fuel smoke,
or as greasy ineffective globules of
liquid are said to be totally eliminated.

The materials and the methods are
available. There is no reason for a drivein theatre to lose money or patronage
because of insect pests.

BELOW is the new Hession Microsol 202. an electrically powered device which provides a new and revolutionary method of producpg continuous aerosol iogs irom concentrated nsecticides. Simple in design.
the unit is portable. weighs 11 pounds, operates on house currents. and requires no specxal skill.